A 401(k) match is money your employer adds to your retirement account based on what you contribute. The plan’s formula sets the rate and a cap, such as “50% of your contributions up to 6% of pay.” On a $70,000 salary, contributing 6% ($4,200) earns a $2,100 match, an instant 50% return before any investment growth. Contributing less than the cap leaves part of that free money behind, which is why capturing the full match is usually the first priority in any savings plan.
How to read a match formula
Every formula has two parts: the match rate (how much the employer adds per dollar you contribute) and the cap (the share of pay the match applies to).
The most common formulas, applied to a $70,000 salary:
| Formula | Contribute to get the full match | Your contribution | Employer match | Match as % of pay |
|---|---|---|---|---|
| 50% up to 6% | 6% | $4,200 | $2,100 | 3% |
| 100% up to 3% | 3% | $2,100 | $2,100 | 3% |
| 100% up to 4% | 4% | $2,800 | $2,800 | 4% |
| 100% of first 3% + 50% of next 2% (safe harbor) | 5% | $3,500 | $2,800 | 4% |
| 100% up to 6% | 6% | $4,200 | $4,200 | 6% |
The tiered “safe harbor” formula is popular because it lets employers skip certain annual nondiscrimination tests. Some employers also make non-elective contributions (for example, 3% of pay to everyone, whether or not they contribute) or profit-sharing contributions decided each year.
Worked example: what you leave on the table
With a 50%-up-to-6% match on $70,000:
| You contribute | Your dollars | Employer match | Unclaimed match |
|---|---|---|---|
| 0% | $0 | $0 | $2,100 |
| 3% | $2,100 | $1,050 | $1,050 |
| 6% | $4,200 | $2,100 | $0 |
| 10% | $7,000 | $2,100 | $0 |
Over a career, that gap compounds. Saving $6,300 a year (your $4,200 plus the $2,100 match) at a 7% annual return grows to about $595,100 after 30 years. Without the match, $4,200 a year grows to about $396,700. The match alone is worth about $198,400. Project your own numbers with the 401(k) calculator.
2026 contribution limits
From IRS Notice 2025-67:
| Limit | 2026 amount |
|---|---|
| Employee elective deferrals (pre-tax plus Roth) | $24,500 |
| Catch-up contribution, age 50 and older | $8,000 |
| Higher catch-up, ages 60 through 63 | $11,250 |
| Total employee plus employer additions (section 415(c)) | $72,000, plus catch-up |
Starting in 2026, employees whose FICA wages from the employer exceeded $150,000 in 2025 must make any catch-up contributions as Roth (after-tax) contributions under SECURE 2.0. The employer match does not count toward your $24,500.
Vesting: when the match becomes yours
Your own deferrals are always 100% yours. Employer contributions can vest over time:
| Schedule | Typical rule | Example after 2 years |
|---|---|---|
| Immediate | 100% vested right away | 100% |
| Cliff | 0% until a set date, then 100%; at most 3 years | 0% (on a 3-year cliff) |
| Graded | Increases each year; must be at least 20% after 2 years and 100% after 6 | 20% |
Safe harbor matches must vest immediately. If you are considering a job change, check your vested balance first; leaving a month before a cliff date can forfeit thousands of dollars.
Per-paycheck matching and the true-up problem
Many plans calculate the match each pay period. That creates a trap for high earners who front-load contributions.
Example: $200,000 salary, paid biweekly ($7,692.31 per check), 50% match up to 6%, and the employee defers 20% per check ($1,538.46).
- The $24,500 limit is reached on the 16th paycheck.
- For the last 10 paychecks there are no deferrals, so no match.
- Match received: about $3,692 instead of the full $6,000, a loss of about $2,308.
Two fixes: ask whether the plan does an annual true-up (an extra contribution after year-end to make up the difference), or spread deferrals evenly so they last all year. Here, $24,500 ÷ 26 = $942.31 per check, about 12.25% of pay, captures the full match.
Roth contributions and the match
Your Roth 401(k) deferrals earn the match exactly as pre-tax deferrals do; the formula looks only at how much you contribute, not which type. Traditionally the match itself went into a pre-tax account, even when you contributed Roth. SECURE 2.0 now lets plans offer employees the option of receiving matching contributions as Roth money. If you choose that, the match is added to your taxable wages for the year, but it and its growth can later come out tax-free in a qualified distribution. Not every plan offers the option, so check with your plan administrator.
If your employer offers no match at all, a 401(k) can still be worthwhile for the tax deferral and high contribution limit, but an IRA may offer lower fees and more investment choices for the first dollars you save.
Where the match fits in your savings order
A common sequence:
- Contribute enough to get the full match.
- Build an emergency fund and pay off high-interest debt.
- Fund an IRA, often a Roth if eligible; see Roth vs. traditional IRA.
- Increase 401(k) contributions toward the $24,500 limit.
Choosing between traditional and Roth deferrals inside the 401(k) follows the same tax-rate logic as IRAs; the Roth vs. traditional calculator compares them.
Effect on your paycheck
Because traditional deferrals reduce federal taxable wages, a 6% contribution costs less than 6% of take-home pay. On $70,000, deferring $4,200 in the 22% bracket lowers federal income tax by about $924, so take-home pay drops by roughly $3,276 a year, or $126 per biweekly check (Social Security and Medicare still apply to the deferral). For the full paycheck math, see how to calculate net pay or the paycheck calculator.
Checklist: getting every matched dollar
- Read the plan’s Summary Plan Description for the exact formula and definition of eligible pay (some exclude bonuses or overtime).
- Confirm when you become eligible and whether you are auto-enrolled; SECURE 2.0 requires most new plans started after 2022 to auto-enroll employees at 3% to 10%.
- Set your contribution at or above the cap.
- Ask about a true-up if you plan to reach the limit before December.
- Check your vesting schedule before changing jobs.
- Increase your rate with each raise; many plans offer automatic annual increases.
To see how the combined contributions grow over decades, read how compound interest works and how much you need to retire.
This guide is general information based on 2026 IRS limits and common plan designs, not financial or tax advice. Your plan document controls the match formula, vesting and true-up rules.
Frequently asked questions
What does '50% match up to 6%' mean?
Your employer contributes 50 cents for every dollar you defer, on deferrals up to 6% of your pay. Contribute 6% of a $70,000 salary ($4,200) and the employer adds $2,100, which is 3% of pay. Contributing more than 6% does not increase the match.
Does the employer match count toward the $24,500 limit?
No. The 2026 limit of $24,500 applies only to your own elective deferrals. Employer contributions count toward a separate overall limit of $72,000 for 2026 (combined employee and employer, not counting catch-up contributions).
What happens to my match if I leave my job?
You keep any vested portion. Your own contributions are always 100% vested, but employer contributions can follow a vesting schedule of up to 3 years (cliff) or 6 years (graded). Unvested employer money is forfeited when you leave.
Is the 401(k) match taxed?
Employer matching contributions are not included in your taxable wages when they are made. They grow tax-deferred and are taxed as ordinary income when withdrawn, like traditional 401(k) money, unless your plan offers and you elect Roth treatment for employer contributions.
Can I lose part of the match by maxing out early?
Yes, if your plan matches each paycheck and has no annual true-up. Hitting the $24,500 limit in, say, August means no deferrals and no match for the rest of the year. Spreading contributions evenly or confirming a true-up avoids this.